Closed shield tunnel boring machines

Tunnel construction: Hydroshield and EPB

Eurohinca excels in tunnel construction using closed shield tunnel boring machines, known as Hydroshield and EPB. These advanced machines allow precise and safe excavation in difficult terrain. Hydroshield technology is ideal for high water pressure conditions, while the EPB (Earth Pressure Balance) system is perfectly suited for mixed and soft soils. Both techniques ensure tunnel stability and environmental protection, guaranteeing successful projects in various subway applications.

Subway tunnels with closed shield tunnel boring machines (TBMs)

Eurohinca specializes in tunnel construction using closed shield tunnel boring machines, also known as earth pressure balance machines. With more than 20 years of experience, we employ state-of-the-art technology such as Hydroshield and EPB to execute subway projects efficiently and safely. These advanced tunnel boring machines allow working in various types of soil, ensuring reliability and accuracy in excavation and tunnel construction, minimizing ground disruption.

Types of closed shield tunnel boring machines

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Frequently asked questions on closed shield TBMs

What are closed shield TBMs?

Closed shield tunnel boring machines are machines used in tunnel excavation. These tunnel boring machines, such as the Hydroshield and EPB, are designed to stabilize the ground and handle different ground conditions, providing safety and efficiency during subway construction.

What is the difference between Hydroshield and EPB?

Hydroshield TBMs are ideal for soils with high water pressure, providing a shield against seepage. EPB (Earth Pressure Balancing) TBMs are suitable for mixed and soft soils, balancing soil pressure and avoiding collapse.

In which projects are closed shield TBMs used?

Closed shield TBMs are used in a variety of subway projects, including submarine outfalls, vertical shafts, and segmental tunnels. They are essential in the construction of subway infrastructure in urban and rural areas.

What are the advantages of using closed shield TBMs?

Advantages include safe and efficient excavation, the ability to handle different soil types, and minimized ground disruption. These TBMs ensure tunnel stability and environmental protection during construction.

How does Eurohinca ensure the quality of its projects?

Eurohinca has more than 20 years of experience and has completed more than 240 projects internationally. It uses advanced technology and specialized equipment, ensuring the precise and efficient execution of tunnels, with a focus on safety and quality.

Is it possible to use these tunnel boring machines in urban projects?

Yes, closed shield TBMs are ideal for urban projects because of their ability to excavate in a controlled and safe manner in densely populated areas, minimizing surface disruption and impact.